Doc's Diesel

Chevrolet/GMC 6.6L Duramax Oil Filter 2020-2025

Replaces PF26

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Sale Price $13.99

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  • Item is in stock
  • Free USA Shipping Over $99*
  • FITMENT GUARANTEED

Doc's Diesel Oil Filters:

Doc's Diesel Premium Oil Filters are built to deliver reliable performance for hard-working trucks. They filter out dirt, metal, and other debris from your oil, helping protect your engine and improve fuel efficiency. They’re made for synthetic, conventional, or blended oils, with high-flow synthetic media and a heavy-duty metal housing for longer life and better filtration. Changing your filter regularly keeps your motor running smoothly and helps prevent overheating.

Product Details:

  • Engineered for Synthetic, Conventional, and Blended Oil Types
  • Rigorously tested for efficiency, capacity, and burst strength
  • Durable construction with high-flow filter media
  • Spring Activated Relief Valve (when applicable)
  • Anti-Drain Back Valve helps prevent engine dry start (when applicable)
  • Doc's auto parts all have an OEM design, fit, and function that meet or exceed OEM Requirements

Micron + Efficiency Rating:

  • 25 Micron @ 99% Efficiency Rating

Fitment, Interchange + Doc's Part Number:

Vehicle Fitment:

  • 2020-2025 Chevrolet/GMC 6.6L Duramax 2500HD, 3500HD

Interchange:

  • Doc's D11878: GM 12684038, AC/Delco PF26, Wix WL10454, Baldwin B7449, Premium Guard PG9952EX

Doc's Part Number:

    D11878

Change Interval:

Above all recommendations, change according to your vehicle’s manufacturer's warranty.

  • Oil Filters: Every 5,000-7,000 miles or 10,000-15,000 miles maximum

Oil Filters Built Tough

Doc’s Premium Oil Filters are built to keep hard-working trucks running at their best. The high-flow synthetic media and heavy-duty metal housing work together to trap dirt, metal, and sludge before it can damage your engine. Compatible with synthetic, conventional, and blended oils, they deliver long-lasting protection that helps boost fuel efficiency and prevent overheating—mile after mile.

Durable Construction

High-Flow Synthetic Media

Made for Synthetic, Conventional, or Blended Oils

25 Micron @ 99% Efficiency Rating

Oil Filters Built Tough

Doc’s Premium Oil Filters are built to keep hard-working trucks running at their best. The high-flow synthetic media and heavy-duty metal housing work together to trap dirt, metal, and sludge before it can damage your engine. Compatible with synthetic, conventional, and blended oils, they deliver long-lasting protection that helps boost fuel efficiency and prevent overheating—mile after mile.

Durable Construction

High-Flow Synthetic Media

Made for Synthetic, Conventional, or Blended Oils

25 Micron @ 99% Efficiency Rating

Customer Reviews

Customer Reviews

Based on 13 reviews
77%
(10)
0%
(0)
15%
(2)
0%
(0)
8%
(1)
J
James McClean
Great filters

I’ve been using Docs oil filters since I bought the truck new, also replace fuel filter with Docs. Parts fit right up!

J
Jeff Bockius
Oil filter

Work very well. The white color makes it easier to label for next schedule maintenance.

D
Damon DeLeaver
Excellent!

I have been far more than pleased with every product that we’ve purchased from you. I can’t wait until I can find out some more info on your oils because I would love to “one stop shop” with you guys. I’m a huge fan and I can’t say enough good things about you guys.

C
Charles Gaston
Not impressed

Took over a week to get my order. None of the discount codes work.

J
Joseph Ray
Review

Love product

E
Emily MOORE
DOCS IS AMAZING

THE BEST FILTERS AND CUSTOMER SERVICE. WE WILL ONLY USE DOCS AT OUR SHOP FOR OUR CUSTOMERS

J
Jeff

Great price and great product

J
Jeff

Great price and great product

G
George Basehoar
Totally the wrong filter

This filter does not fit a 2024 GMC Duramax

M
Mike Northrup
Good

Good but wish you had the option for the longer filter

FREQUENTLY ASKED QUESTIONS

What’s your shipping policy?

We offer free shipping over $99 on all orders within the contiguous United States. Expedited shipping is available for an additional charge. Alaska, Hawaii, and Canada will have shipping fees.

Where does Doc’s Diesel ship to?

We ship to the U.S. and Canada! For Canada orders, any taxes, duties, or customs fees are the responsibility of the buyer. We handle orders in 1-2 business days, and most of the time in less than 24 hours if ordered on a week day. Depending on location, U.S. orders will arrive between 3-5 business days from your order. Canada orders typically arrive within 7-11 days.

What is your warranty?

View our Official Limited Warranty

Doc’s Diesel Filters meet or exceed Original Equipment Manufacturer’s (OEM) requirements. New vehicle warranties stay in effect when Doc’s Diesel filters are installed correctly and in conjunction to engine manufacturer’s recommendations.

Where is my order?

If you have not received your confirmation email us sales@docsdiesel.com so we can get everything sorted out ASAP. If you received a confirmation but no shipment email, we are still working on your order. Don't hesitate to email sales@docsdiesel.com if you would like more information and we'd be happy to check on your order. Please Include your order # in the email.

For Tracking information, it will be in your shipment email. Check the tracking # first or the latest updates. Doc's Diesel, just like you are at the mercy of shipping companies after a shipment leaves our warehouse. If there's been an issue with shipment we will happily work with you to figure out where the order is and what we can do to help. You can reach out to sales@docsdiesel and include your order # in the email. Thank You!

Why didn’t I get a confirmation email?

Sometimes an email may get sent to your spam folder! So don’t forget to check that. If you need more help to hesitate to reach us at sales@docsdiesel.com.

How do I start a return?

If you are unhappy with your purchase for whatever reason, and it's within 30 days from your purchase, you can return your diesel filters back to us. Item has to be in new condition. Once filters are received, we will refund your money (minus price of return shipping) within 2-4 business days. We will refund to your original form of payment. 

To start a return, visit our Returns Center.

View Our Official Limited Warranty Policy

Thank you!